Semiconductor integrated circuit, variable gain amplifier, and sensing system
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United States of America Patent
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Aug 28, 2018
Grant Date -
Apr 5, 2018
app pub date -
Nov 21, 2017
filing date -
Oct 1, 2014
priority date (Note) -
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Abstract
A semiconductor integrated circuit includes a first pad provided on one end side of a first resistive element and one end side of a second resistive element externally provided, a second pad provided on a different end side of the first resistive element, a third pad provided on a different end side of the second resistive element and one end side of a third resistive element externally provided, an operation amplifier, a first signal line, wired between an output terminal of the operation amplifier and the first pad, a second signal line wired between an inverting input terminal of the operation amplifier and the second pad, a third signal line wired between the inverting input terminal of the operational amplifier and the third pad, a first ESD protection element, provided to the first signal line, a fourth signal line, through which a voltage signal of the first pad.
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